Method of casting chains



W. LEWIS.

METHOD 0F CASTING CHAINS. APPLICATION FILED IAIIl Iz. I9I8.

Paented June 17, 1919.

5 SHEETS-SHEET l.

w. LEWIS.

METHOD 0F CASTING CHAINS. APPLICATION FILED IAII. I2. I9Is.

Patented June 17, 1919.

METHOD 0F CASTING CHAINS. APPLICATION FILED IAN. I2. IQIa.

Patented June 17, 1919.

5 SHEETS-SHEET 3.

W. LEWIS. IvIETIIoIJ 0F CASTING CHAINS.

` APPLICATION FILED IAN. I2. I9I8. v 1,307,136. ParentedJune 17, 1919.

ASA AA AXA AXA

W. LEWIS.

METHOD 0F CASTING CHAINS. APPucATloN FILED JAN. I2. 19m.

Patented J une 17, 1919.

5 SHEETS-SHEET 5.

l l 36s IIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIII I-'IIIIIIIIIIIIIIIIIIIIIIIIIIIWIIIIIIIIIIIIIIIIIIIII 22 /llllfllIIIIIIIIIIIIIIIIIWIIIIIIIIIIIIIIIIIIIIIIII A A 22 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIII I IIIIIIIIIIIIIIIIIIIIIIIIIIII LII'IIIIIIIIIIIIIIIIIIIIII WILFRED LEWIS, F HAVERFORl), PENNSYLVANIA.

METHOD OF CASTING CHAINS.

Specification of Letters Patent.

Patented June 17, 1919.

Application filed January 12, 1918. Serial No. 211,657.

To all whom t may concern.'

Be it known that l, WiLFRED LEWIS, a

. citizen of the United States, and a resident of Haverford, in the county ot Montgomery and State of Pennsylvania, have invented a ycertain new and useful Method ot Casting Chains, of which the following is a speciication.

The principal object of the present invention is to provide a simple, comparatively inexpensive and expeditious method of casting chains which may be of steel and of the stud variety.

Generally stated the method consists in making core-sand molds with fusi-ble half link patterns or forms and in the case of stud chains with half stud patterns or forms, in the case of stud chains drawing the stud patterns or forms and baking the sand and melting out the fusible patterns or forms to make destructible mold sections each containing two half link matrices, arranging the mold sections face to face to provide link matrices in adjoining sections, pouring these separate matrices to cast the chain, and destroying the mold 'sections to remove the chain. y

lThe accompanying drawing are illustrativeof the invention and 'of certain apparatus that can be employed in the practice of the same.

In the drawings, Figures l and 2 are sections taken at right angles to each other and illustrating the arrangementot' the patterns in the flask.

Fig. 3, is a top view ot the flask.

Fig. 4, is a section on the line 4 4 of Fig. 3.

Figs. 5 and 6, illustrate the core-sand mold before and after baking. i

Fig. 7, is a side view, partly in section, illustrating the molds arranged for pouring.

Fig. 8, is a section on the line 8-8 ot Fig. 7, and

Figs. 9 and l0, are top or plan -views diagrammatically illustrating the manufacture of a chain yby making it in sections and then joining the sections together.

The halt link Yforms l and 2, are made of. fusible metal, su h as lead or an alloy thereof, and can be readily cast, for example, in

iron molds. They are arrangedin the vflask 3 in such a way that the form l is supported as by means of feet l from pattern plate 5 at the bottom of the mold, and the form 2 is suspended through, but not in contact with, the form l. The form 2 is shown as suspended lbyheads 6, arranged between a pair of bars and 8, supported on the top of the flask 3. In making a stud chain, one of the half stud patterns 9 is secured to the pattern plate 5, and the other halt' stud pattern l0 is secured yby a head ll arranged between the bars 7 and 8., l2, is a sand frame that may be applied to the top of the ask and through suitable openings in which extend the ends of the cross-bars 7 and t5.

rThe pattern plate 5 is provided with a gate 13 and use may be made of non-fusible dowel pins 14, supported in suitable sockets in the pattern plate 5, and otl patterns 15, supported from the cross-bars and adapted to make opr-.nings tor the reception ot' the dowel pins. The parts being arranged substantially as shown in Figs. l and 2, the tlask is rammed with core-sand, or its equivalent, the tlask trame is removed permitting the bars 'l' and S to be separated and removed, the sand is struck otl'. the patterns l5, 13

Aand l() are drawn, as is also the pattern E),

leaving what may be called a core-sand mold containing within it the fusiblel'iatterns or orms l and 2 and otherwise having matrices l0 formed by the withdrawal ot' the patterns l5 and matrices 17 and 18, formed by the withdrawal ot the patterns S) and 10. The mold also has a runner 1f) (Fig. 3) and it Iuay be remarked that the runners 19 extend in opposite directions in different molds or, in other words` some moldsI are rights" and some are let'ts". as is evident trom Fig. h.

The core-sand mold in the general condition illustrated in Fig. 5. is then baked and l'or this purpose it may remain in the hinged flask Il (Fig l). As a result ot' the baking the fusible forms or patterns l and 2 run out and the mold becomes sutlticientl)y hard and strong for casting. yet readily destructible. llach mold section then is illustrated in Fig. and contains two non-communicating matrices (ly and [peach of thel form of a haltl link and it may lbe provided with dowelA pins 14 and corresponding cavities 16 therefor. A series of these baked coresand mold sections are then arranged face f to face, as shown in Fig, 7, for example in also the polygonal form of the molds and of the frame 21.

Each mold or mold section is an integral structure and has opening through two of its faces, the open ends of looped non-communicating part-link matrices, and in the assemblage of these separate integral mold sections the open ends of these-part-link matrices are alined'to make -li'nk matrices. Runner boxes 22 may be applied for pouring metal into two adjacent molds, within which there is formed one complete link, and a repetition of this operation produces the chain of links.

The mold sections are destroyed to remove them from the chain and this can be.ac complished by the simple operation of shaking the chain, or in anyother convenient way.

The fusible metal which runs out of the core-sand molds when they are baked and which constituted the forms 1 and 2 can be returned to the melting pot for use in molding additional forms 1 and 2, as has been above referred to.

From the foregoing description it is evident that the length ofthe chaindepends upon the number of mold sections employed and is unlimited, except by practical consideration of space and the like. Ordinarily the half link matrices at the extreme ends of the series of mold sections would not j be poured. However, two series of chains when poured can be joined by putting their end molds face to face and then pouring the connecting link. Referring to Fig. 10, a number of rows A and B of mold sections assembled as above described, of lengths depending upon the size and convenience of the foundry, are1 laid down. To make a chain, for example 1000 long, it would be hardly possible to secure a ioor of that length, and ten rows of 100, twenty rows of 50', or any convenient number of rows aggregating the total length desired can be used on the available oor space. The rows may be parallel with room between them for setting and pouring, then after pouring thesel molds and casting separate lengths of chain and allowing them time to cool enough for handling a few links are4 freed from the chain near the end of each row, as shown at D by dotted lines, keeping the end molds undisturbed so as to be shifted and brought into contact as indicated in Fig. 9. Then the final link can be poured, uniting two rows of chain, and finally the iioor will resembie a great snake as shown in Fig. 10. Care must be exercised to position the end molds in adjacent rows to be united in such manner that they will come together properly. ln this way it is evident that a chain of almost any length can be made within a foundry of reasonable size. By the use of baked coresand molds, instead of green sand, better castings are obtained especially in steel. v

Any iins that may adhere to the chain'and which correspond to the runners, or are produced thereby, may be broken off and ground if necessary.

lV hat I claim is:

1. The process of making chains which. consists in making core-sa nd molds with fusible spaced half. link patterns or forms, baking the core-sand molds and melting out the fusible.` patterns or forms to make destructible mold sections each containing two noncommunicating half link matrices, arranging the mold sections face to face with the partings crosswise of the length of the chain to provide link matrices partly in adjoining sections, pouring these separate link matrices to cast the chain, and destroying the mold sections to remove the chain.

2. The process of making chains which consists in making core-sand molds with fusible half link patterns or forms and with half stud' patterns or forms, drawing 'the half Stud patterns or forms and baking the core-sand molds to run out the fusible teins or forms to make destructible meid sections each containing two non-communicating half link lmatrices and half stud matrices, arranging the mold sections face to face to provide link martices partly in adjoining sections, pouring these separate link 1 matrices to cast the chain, and destroying the sections to remove the chain.

3.-'Ihe process of-making chains which consists in making molds each containing two non-communicatingfhalf link matrices and arranging the molds face to face to provide link matrices partly in adjoining molds, pouring these separate link matrices to cast the chain, and destroying the molds to remove the chain. s

4. The process of making chains which consists in making molds each containing two duplicate non-communicating half link matrices opening through the opposite faces of the molds, arranging the molds face'to face with'the matrix openings in alinement to provide link matrices partly in adjoining molds, pouring the separatelink matrices to cast the chain, and destroying the mold sections to remove the chain.

5. The process of making chains which consist-s in making integral destructible molds having open half-link matrices, ar-

ranging* Such molds in series with `the open ing spaced and locked lml-link matrices li-filfdink matrices in ulinement to provide extending through two of their faces, arcoinplete link matrices, pouring the matrices, rai'iging a Series of suoli molds fa-ce to face to 10 and destroying the molds to remove tlie provide Complete link matrices, pouring the 5 chain. complete matrices, and destroying the molds 6. 'Tlv' process of making Chains which to remove the chain.

consists inniaking looked integrzilinolds lmv- LFRED LEWIS. 

